Gashman said:deltas won't do nothing...the fan motor has practically no torque and a human finger, polo, coin, etc are far to tough to be damaged by something that'll stop as soon as you touch it, plus the fan blades themselves weigh next to nothing meaning they have little mass, thus meaning little energy when hitting something. howabout how much damage can i do with a microwave, always potentially explosive...![]()
How about sticking some razors on the fan blades?